diff --git a/pybossa/repositories/task_repository.py b/pybossa/repositories/task_repository.py
index 46c74c26e..c7f062dcb 100644
--- a/pybossa/repositories/task_repository.py
+++ b/pybossa/repositories/task_repository.py
@@ -202,29 +202,29 @@ def update(self, element):
             raise DBIntegrityError(e)
 
     def delete(self, element):
-        tstart = time.time()
+        tstart = time.perf_counter()
         self._delete(element)
-        tend = time.time()
+        tend = time.perf_counter()
         time_delete = tend - tstart
 
-        tstart = time.time()
+        tstart = time.perf_counter()
         project = element.project
-        tend = time.time()
+        tend = time.perf_counter()
         time_project = tend - tstart
 
-        tstart = time.time()
+        tstart = time.perf_counter()
         self.db.session.commit()
-        tend = time.time()
+        tend = time.perf_counter()
         time_commit = tend - tstart
 
-        tstart = time.time()
+        tstart = time.perf_counter()
         cached_projects.clean_project(element.project_id)
-        tend = time.time()
+        tend = time.perf_counter()
         time_clean_project = tend - tstart
 
-        tstart = time.time()
+        tstart = time.perf_counter()
         self._delete_zip_files_from_store(project)
-        tend = time.time()
+        tend = time.perf_counter()
         time_delete_zip = tend - tstart
 
         time_total = time_delete + time_project + time_commit + time_clean_project + time_delete_zip